PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/01-18:42:50
G01     101.7          27.5               12.4 +/-    1.19      22.9 +/-    1.19  0.030 / 0.050
G07     116.2          47.9               12.9 +/-    0.36      16.7 +/-    0.36  0.050 / 0.060
G08     41.5           16.0                8.5 +/-    1.37      20.7 +/-    1.37  0.040 / 0.060
G09     174.6          10.9               16.0 +/-    3.13      44.0 +/-    3.13  0.040 / 0.070
G11     80.7           42.7               12.3 +/-    0.44      17.2 +/-    0.44  0.120 / 0.300
G13     305.2          32.2               10.1 +/-    2.40      16.8 +/-    2.40  0.120 / 0.350
G17     207.0          42.8               14.1 +/-    0.96      19.7 +/-    0.96  0.090 / 0.180
G18     73.1           24.1                9.6 +/-    0.82      19.1 +/-    0.82  0.080 / 0.150
G28     317.6          60.2               11.2 +/-    0.86      12.7 +/-    0.86  0.080 / 0.140
G30     60.1           79.2               11.5 +/-    1.02      11.7 +/-    1.02  0.090 / 0.160